GPT-5.5 vs Kimi K2.7 Code
API pricing, context window and capabilities for GPT-5.5 and Kimi K2.7 Code, side by side. Prices are the cheapest serving route per 1M tokens, verified against LiteLLM and OpenRouter.
Verdict
computed from the published numbersGPT-5.5 wins on coding, on intelligence and on context window. Kimi K2.7 Code wins on price.
Price
Kimi K2.7 Code
Coding
GPT-5.5
Intelligence
GPT-5.5
Context window
GPT-5.5
Key takeaways
who wins on what, from the published numbersGPT-5.5 wins
- Larger context window (1.1M vs 262K)
- More serving providers (2 vs 1)
- Supports vision
- Supports prompt caching
- Supports structured output
- Has web search
Kimi K2.7 Code wins
- Cheaper input ($5.00 vs $0.95 /1M)
- Cheaper output ($30.00 vs $4.00 /1M)
- Higher max output (128K vs 262K)
Cheaper overall
Kimi K2.7 Code
$0.95 + $4.00 /1M
Larger context
GPT-5.5
1.1M
More providers
GPT-5.5
2 providers
Pricing & specs
cheapest serving route · per 1M tokens| GPT-5.5 | Kimi K2.7 Code | |
|---|---|---|
| Input $/1M | $5.00 | $0.95 best |
| Output $/1M | $30.00 | $4.00 best |
| Context window | 1.1M best | 262K |
| Max output | 128K | 262K best |
| Serving providers | 2 best | 1 |
| Released | 2026-04-23 | 2026-06-13 |
Benchmarks
Artificial Analysis indices, side by side| GPT-5.5 | Kimi K2.7 Code | |
|---|---|---|
| Intelligence | 54.8 best | 42.0 |
| Coding | 74.9 best | 60.8 |
| GPQA Diamond | 94% best | 90% |
| Output speed | 87 t/s best | 45 t/s |
| Latency (TTFT) | 23.21s best | 39.31s |
Cost calculator
choose a serving route for each sideInput tokens / month
Output tokens / month
GPT-5.5
via Azure
$55
Kimi K2.7 Code
via Cloudflare
$8.75
Capabilities
feature support, side by side| Feature | GPT-5.5 | Kimi K2.7 Code |
|---|---|---|
| Vision | ✓ | — |
| Tool use | ✓ | ✓ |
| Reasoning | ✓ | ✓ |
| Audio | — | — |
| Prompt caching | ✓ | — |
| Structured output | ✓ | — |
| Web search | ✓ | — |
Related comparisons
Frequently asked questions
Which is cheaper, GPT-5.5 or Kimi K2.7 Code?
Kimi K2.7 Code is cheaper for input ($5.00 vs $0.95 per 1M tokens). Kimi K2.7 Code is cheaper for output ($30.00 vs $4.00 per 1M tokens).
What is the context window difference between GPT-5.5 and Kimi K2.7 Code?
GPT-5.5 has a 1.1M-token context window and Kimi K2.7 Code has 262K tokens, so GPT-5.5 can take a larger prompt.
How do GPT-5.5 and Kimi K2.7 Code compare on benchmarks?
On the tracked Artificial Analysis indices, GPT-5.5 leads on coding, and GPT-5.5 leads on intelligence.
Pricing verified against LiteLLM + OpenRouter + provider pages · refreshed daily
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